Anaheim Pepper (New Mexico, Hatch) in Zone 10a & 10b
Capsicum annuum
Yes, Anaheim pepper (New Mexico, Hatch) grows in zones 10a and 10b. Start seeds indoors in Dec–Feb and plant out in Feb–Apr.
When to plant Anaheim pepper (New Mexico, Hatch) in zone 10b
Zones 10a and 10b share the same average frost dates, so this page covers both.
Method: Start indoors: Start indoors from seed, then transplant outside. It needs a head start most zones can't give it by direct-sowing alone.
| Window | Spring window |
|---|---|
| Start indoors | Dec–Feb |
| Direct sow / transplant outside | Feb–Apr |
| Estimated harvest | ~78 days after transplanting |
| Window | Summer window |
|---|---|
| Start indoors | May–Jul |
| Direct sow / transplant outside | Jul–Sep |
| Estimated harvest | ~78 days after transplanting |
Spacing: 1 per square foot (square-foot-gardening spacing). Mature height: 1.5-2 ft.
Zone 10b dates sourced from growinginthegarden.com.
Before you plant: Zone 10b summers commonly stall Anaheim pepper (New Mexico, Hatch)'s fruit set midseason. See the details below.
Plant alongside it in zone 10b
These go outside within two weeks of Anaheim pepper (New Mexico, Hatch) in zone 10b, so one planting day can cover them.
- Bell PepperFeb–Apr
- Cayenne PepperFeb–Apr
- Chile de Árbol PepperFeb–Apr
- Cubanelle PepperFeb–Apr
- Fresno PepperFeb–Apr
- Guajillo Pepper (Mirasol)Feb–Apr
Anaheim is the long, mild green chile that gets roasted, peeled and stuffed or chopped into green chile stew. It is part of the same New Mexican chile group sold as Big Jim, NuMex and, when grown in New Mexico's Hatch Valley, Hatch chile. Hatch is a growing region, not a variety.
How Anaheim pepper (New Mexico, Hatch) fits zone 10's season
Zone 10b's frost-free window runs about 324 days, from January 30 to December 20. Anaheim pepper (New Mexico, Hatch) needs about 78 days from transplant to first harvest.
Heat warning for zone 10b: Zone 10b summer nights commonly exceed 75°F, which stalls pollination and causes blossom drop in Anaheim Pepper (New Mexico, Hatch) at the height of summer (University of Maryland Extension, via UDel Cooperative Extension). Expect a slow patch for fruit set during the hottest stretch even though the plant keeps growing. It typically resumes once nights cool.
Anaheim Pepper (New Mexico, Hatch) planting windows in every zone
Zone 10b is highlighted. Useful for comparing against a neighbouring zone, or for a garden somewhere else.
| Zone | Start indoors | Sow or plant out | Harvest |
|---|---|---|---|
| 3a & 3b | Apr 4–Apr 11 | Jun 13–Jun 20 | Aug 30–Sep 6 |
| 4a & 4b | Mar 20–Mar 27 | May 29–Jun 5 | Aug 15–Aug 22 |
| 5a & 5b | Mar 15–Mar 22 | May 24–May 31 | Aug 10–Aug 17 |
| 6a & 6b | Feb 28–Mar 7 | May 9–May 16 | Jul 26–Aug 2 |
| 7a & 7b | Feb 13–Feb 20 | Apr 24–May 1 | Jul 11–Jul 18 |
| 8a & 8b | Jan 28–Feb 4 | Apr 8–Apr 15 | Jun 25–Jul 2 |
| 9a & 9b | Dec 21–Dec 28 | Mar 1–Mar 8 | May 18–May 25 |
| 10a & 10bSpring window (your zone) | Dec–Feb | Feb–Apr | ~78 days after transplanting |
| Summer window | May–Jul | Jul–Sep | ~78 days after transplanting |
| 11a & 11bSummer window | Jun–Dec | Aug–Feb | ~78 days after transplanting |
Harvest dates are about 78 days after the sow or plant-out date, not after starting seeds indoors.
Good companions
- Basil: Reputed to repel aphids and improve pepper growth nearby, but a controlled garden trial testing this same claim on a related crop found no pest-reduction benefit from basil, and found higher pest counts on the basil-companioned plants. Treat this pairing as unproven, not as a working pest deterrent.
- Onion: Reputed to deter many common pepper pests, though this specific pairing hasn't been tested the way onion/carrot pest-masking has. Treat it as garden tradition.
Where to buy Anaheim pepper seeds
True Leaf Market · Burpee · High Mowing Organic Seeds (each supplier's Anaheim pepper seeds)
Varieties we recommend, and where to get them:
- NuMex Joe E. Parker (best for mild roasting chiles): Released by New Mexico State University in 1990 as a mild New Mexican-type chile, about 900 Scoville units. Buy: Botanical Interests Full notes
- NuMex Big Jim (best for big pods for chiles rellenos): A 1975 NMSU release with long, thick, fleshy green pods, averaging about 7.7 by 1.9 inches in NMSU's records, and hotter than Joe E. Parker at about 6,500 Scoville units. Buy: True Leaf Market Full notes
See why we recommend these suppliers →
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See it growing
Search YouTube for "growing Anaheim pepper (New Mexico, Hatch)" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
← Back to the full zone 10b calendar · Plan your beds in the Garden Designer →
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Growing Anaheim Pepper (New Mexico, Hatch) in USDA zone 10b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
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